I was trying to download the wine hq, but when I tried to download it, something happened to my computer. After I failed to install wine, I always encountered the same problem when I write this command: sudo apt-get update, or justapt-get update.
The problem is that I receive this message in my terminal.E: Malformed entry 60 in list file /etc/apt/sources.list(Component) E: The list of sources could not be read. From there, I cannot use any apt-get command...
Could you fix this problem?
I used the command sudo more /etc/apt/sources.list to get the lines for the source.list
In my source.list, it says the following:

# deb cdrom:[Ubuntu-MATE 20.04 LTS _Focal Fossa_ - Release amd64 (20200423)]/ fo
cal main multiverse restricted universe
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ focal main restricted
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ focal-updates main restricted
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ focal universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal universe
deb http://us.archive.ubuntu.com/ubuntu/ focal-updates universe
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us.archive.ubuntu.com/ubuntu/ focal multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal multiverse
deb http://us.archive.ubuntu.com/ubuntu/ focal-updates multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal-updates multiverse
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu focal partner
# deb-src http://archive.canonical.com/ubuntu focal partner
deb http://security.ubuntu.com/ubuntu focal-security main restricted
# deb-src http://security.ubuntu.com/ubuntu focal-security main restricted
deb http://security.ubuntu.com/ubuntu focal-security universe
# deb-src http://security.ubuntu.com/ubuntu focal-security universe
deb http://security.ubuntu.com/ubuntu focal-security multiverse
# deb-src http://security.ubuntu.com/ubuntu focal-security multiverse
# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
deb https://dl.winehq.org/wine-builds/ubuntu/ cosmic main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ cosmic main
deb https://dl.winehq.org/wine-builds/ubuntu/focal main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/focal main
deb https://dl.winehq.org/wine-builds/ubuntu/ focal main
# deb-src https://dl.winehq.org/wine-builds/ubuntu/ focal main

I hope this information helps to find the malformed entry.
I am new to linux, so it is very hard for me to find what to do...

Hi, thank you for your help.
Because I am beginner in linux os, I don't know what "vi" is.
Also, I don't know how to get to "xed".
The command sudo xed /etc/apt/sources.list doesn't work for me.
It says that xed command cannot be found. How to you go to the Edit>prefs>Display?

Kevin, seems you dont have xed as an editor. But, I think you have pluma editor on your system.sudo pluma /etc/apt/sources.list
Pluma shows the Line number at the bottom of the window. Go to line 60 and add that space. Save, Exit, and test again that sudo apt update is clean (w/o errors)